Electricity: measuring and testing – Testing potential in specific environment – Voltage probe
Patent
1997-06-05
1998-12-01
Strecker, Gerard R.
Electricity: measuring and testing
Testing potential in specific environment
Voltage probe
324248, 324260, 330 61R, 343767, 505846, 505855, 327528, H03F 1900, H01Q 1300, G01R 2908, G01R 33035
Patent
active
058444076
ABSTRACT:
A magnetic field sensor which can be used as an active antenna is disclosed that is capable of small size, ultrawideband operation, and high efficiency. The sensor includes a multiplicity of magnetic field transducers, e.g., superconducting quantum interference devices (SQUIDs) or Mach-Zehnder modulators, that are electrically coupled in a serial array. Dummy SQUIDs may be used about the perimeter of the SQUID array, and electrically coupled to the active SQUIDs for eliminating edge effects that otherwise would occur because of the currents that flow within the SQUIDs. Either a magnetic flux transformer which collects the magnetic flux and distributes the flux to the transducers or a feedback assembly (bias circuit) or both may be used for increasing the sensitivity and linear dynamic range of the antenna.
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Hammar John C.
Strecker Gerard R.
The Boeing Company
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